Java

The OWASP community is getting together for another meetup in May 2026! Join us for some security talks 🔐, good company 🤝, and a little aperitif 🍕. **Program:** **16:00** - **Doors open**: Grab a drink, meet old and new friends from the OWASP Switzerland community **16:30** - **Hello from OWASP Switzerland** **16:40 - Talk: Securing Your Code & Environment in the Age of AI-Accelerated Threats (Markus Rollwagen, Senior Solutions Architect, AWS)** **17:25** **-** **(10min break)** **17:35 - Talk: Using HoneyPots to protect critical Infrastructure (Giulio Grazzi, Head IT Security, SRF)** **18:35** - **(10min break)** **18:45 - Talk: We Tried to Detect Prompt Injection in Coding Agents. Here's What Broke (Paulo Martins, Principal Security Engineer, GitLab)** **19:30 - Networking & Pizza 🍕 & Aperitif**🍷- Grab a bite and chat with old and new friends **Talks Details:** **Securing Your Code & Environment in the Age of AI-Accelerated Threats (Markus):** AI keeps shortening the mean time from vulnerability disclosure to exploitation. This talk will discuss a playbook security teams can apply today — covering the CSA "Mythos-Ready" framework, AWS Security Agent, agentic threat modeling, and the fundamentals that continue to work **Using HoneyPots to protect critical Infrastructure (Giulio):** How do you protect your critical infrastructure in the days of agentic ai and very limited options on your hosts? You need to get creative and use stone age tech. I’ll give you some insights, from our journey and pitfalls you might be facing (and should be avoided :)) **We Tried to Detect Prompt Injection in Coding Agents. Here's What Broke (Paulo):** As a community, we are delegating a significant part of our development workflow to agents, and as the use cases grow, the risk of prompt injection keeps increasing - to the point that it made it to the top of the OWASP LLM Top 10. In this talk, I'll explore the concept of "detect and prevent prompt injection" and why it is particularly hard to do for coding agents. **Speaker Details:** **Markus Rollwagen** Senior Solutions Architect at AWS, based in Switzerland Markus enjoys deep dive technical discussions, while keeping an eye on the big picture and the customer goals. With a software engineering background, he embraces infrastructure as code and is passionate about all things security. **Giulio Grazzi** Head IT Security, SRF From bike messaging to networking to infosec - always maximize never max out. Currently at Schweizer Radio und Fernsehen dealing with all Infosec topics, background in networking, embedded devices and mobile security. **Paulo Martin** Principal Security Engineer, GitLab since 2021 Now focused on AI security: prompt injection, sandboxing, and keeping agentic workflows from doing things they shouldn't.

⬇️⬇️⬇️ **EN/DE/PR** ⬇️⬇️⬇️ **🎶 Samba Drumming,** **Open Bateria** **🎶** Beginners and experienced drummers... all are welcome! This session is about discovering samba, or discovering a different samba instrument if you are already playing. ***Note:*** if you are experienced with samba enredo drumming and would like to dive straight into an ensaio please reach out to us. We are always looking to grow our core team! **💥 What to Expect:** \- All Skill Levels: From newbies to seasoned drummers\. \- No Instruments Needed: We provide everything\, but you can bring your own\. 💰 **Cost** 💰 First-timers try-out for free! 15 CHF per session thereafter (open bateria is included in full association membership). **🥁 Ready to Drum?** 🥁 Don't miss this fun, energizing session! Connect with the samba community and drum your heart out. **📌 What to Bring:** **\- Ear Plugs:** Recommended "Alpine Music Pros." **\- Water Bottle:** Stay hydrated. **\- Spare T\-Shirt:** It gets warm! \-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\- **"🎶 Samba Trommeln, Offene Bateria 🎶** Anfänger und erfahrene Trommler... alle sind willkommen! In dieser Session geht's darum, Samba zu entdecken oder, wenn du schon spielst, ein anderes Samba-Instrument auszuprobieren. ***Hinweis:*** Wenn du bereits Erfahrung mit Samba-Enredo-Trommeln hast und direkt in eine Probe einsteigen möchtest, melde dich bei uns. Wir sind immer auf der Suche, unser Kernteam zu erweitern! **💥 Was dich erwartet:** * Alle Erfahrungsstufen: Von Neulingen bis zu erfahrenen Trommlern. * Keine Instrumente nötig: Wir stellen alles zur Verfügung, aber du kannst gerne dein eigenes mitbringen. **💰 Kosten 💰** Erste Session kostenlos! Danach 15 CHF pro Session (offene Bateria ist in der vollständigen Mitgliedschaft enthalten). 🥁 Bereit zum Trommeln? 🥁 Verpass diese spaßige und energiegeladene Session nicht! Verbinde dich mit der Samba-Community und trommle aus vollem Herzen. 📌 Was du mitbringen solltest: * Ohrstöpsel: Empfohlene "Alpine Music Pros." * Wasserflasche: Hydriert bleiben. * Ersatz-T-Shirt: Es wird warm!" \-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\- **🎶 Samba de Bateria, Bateria Aberta 🎶** Iniciantes e bateristas experientes... todos são bem-vindos! Essa atividade é pra você conhecer o samba ou, se você já toca, descobrir um instrumento diferente de samba. ***Nota:*** se você já tem experiência com samba enredo e quer ir direto para um ensaio, entre em contato com a gente. Estamos sempre buscando crescer nosso time principal! **💥 O que Esperar:** * Todos os Níveis: De novatos a bateristas experientes. * Sem Necessidade de Instrumentos: Nós fornecemos tudo, mas você pode trazer o seu se quiser. **💰 Custo 💰** A primeira sessão é grátis! 15 CHF por sessão depois (bateria aberta está incluída na associação completa). **🥁 Pronto para Tocar? 🥁** Não perca essa sessão divertida e energizante! Conecte-se com a comunidade do samba e toque com o coração. **📌 O que Levar:** * Protetores de Ouvido: Recomendamos "Alpine Music Pros." * Garrafa de Água: Fique hidratado. * Camiseta Extra: Vai esquentar!" \-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-

Accessibility often feels overwhelming with all its guidelines, standards and edge cases. But in practice, meaningful improvements don’t require perfection. They require empathy and a sincere motivation to create a truly usable experience for all. In this talk, we share real learnings from UX and UI projects: what actually made a difference, where teams struggled, and how small, deliberate changes created a much more inclusive experience. You’ll walk away with a practical mindset and actionable ideas to start improving accessibility in your own projects — without waiting for the “perfect” solution. By Maria Timonen & Silio Keiser from Bitforge

⬇️⬇️⬇️ **EN/DE/PR** ⬇️⬇️⬇️ Our 'Ensaio de Bateria' is for regular members of the association and exceptionally for those who have previous experience playing in a samba bateria (please get in touch if you're interested, we'd love to hear from you). In this session, we will dive into fresh material and technique, while also taking the time to perfect individual parts of our existing repertoire if needed. Whether you're looking to improve your groove or refine specific techniques, this is the perfect opportunity to elevate your skills! **What to bring:** * Ear Plugs (we recommend "Alpine Music Pros" from a music shop) * Water Bottle for staying hydrated * Spare T-shirt for afterwards (it gets pretty warm) \-\-\-\-\-\-\- Unsere 'Ensaio de Bateria' ist für regelmäßige Mitglieder des Vereins und ausnahmsweise für diejenigen, die bereits Erfahrung in einer Samba Bateria haben (bitte melde dich, wenn du Interesse hast, wir würden uns freuen, von dir zu hören). In dieser Session werden wir uns mit neuem Material und Technik beschäftigen, uns aber auch die Zeit nehmen, einzelne Teile unseres bestehenden Repertoires zu perfektionieren. Egal, ob du deinen Groove verbessern oder bestimmte Techniken verfeinern möchtest, dies ist die perfekte Gelegenheit, deine Fähigkeiten zu steigern! **Was du mitbringen solltest:** · Ohrstöpsel (wir empfehlen "Alpine Music Pros" aus dem Musikfachhandel) · Eine Wasserflasche, damit du genug Flüssigkeit zu dir nehmen kannst · Ersatz-T-Shirt für danach (es wird ziemlich warm) \-\-\-\-\-\-\- Nosso "Ensaio de Bateria" é para os membros regulares da associação e, excepcionalmente, para aqueles que têm experiência anterior de tocar numa bateria de samba (entre em contato se você estiver interessado, gostaríamos muito de ouvir você!). Nesta sessão, vamos nos aprofundar em novos materiais e na técnica, além de dedicar tempo para aperfeiçoar partes individuais de nosso repertório existente, se necessário. Se estiver procurando melhorar seu groove ou refinar técnicas específicas, esta é a oportunidade perfeita para elevar suas habilidades! **O que trazer:** * Protetores de ouvido (recomendamos "Alpine Music Pros”). * Garrafa d’água para se manter hidratado * Uma troca de roupa para depois do ensaio (fica bem quente)

We keep it a fun and practical language exchange. First thing you'll notice is we match you with **fluent speakers** in your target language. **Event Flow** **18:45–19:15** → Registration Scan the QR code to tell us your fluent and target languages. **19:15–20:30** → Language Exchange Powered by our **Learn by Flipping** method. **20:30 onwards** → Stay, chat, or head off — totally up to you 😉 **What is "Learn by Flipping"?** **Practical** → You speak with fluent speakers in your target language. **Collaborative** → Every 5 minutes, you switch roles: learner ↔ helper. **Fun** → Small groups, good energy, and a bar atmosphere — without the chaos. Save some time by [Signing up to our web app](https://fliplingoes.com/) beforehand. **Entrance:** 10 CHF (includes a tapa) Please note, event registration closes after 7:15PM

**☕ Investment Café – Your Monthly Investment Meetup** The Investment Café takes place **every last Thursday of the month** in Zürich. Whether you're a beginner or more advanced – the **Investment Café** offers a relaxed atmosphere to talk openly about money. 📈 **Topics we’ll cover together:** • Best practices for investing • Macro indicators • Stocks, Bonds, Funds, etc • Your open questions – discussed directly with an expert • Learning from each other – through real community exchange 🔗 **More infos about the host:** [https://www.linkedin.com/in/alakatos/](https://www.linkedin.com/in/alakatos/ "https://www.linkedin.com/in/alakatos/") Stop by, join the conversation, and get fresh inspiration for your investment journey!

Welcome to the Open Level Play Session. This session takes place every Saturday from 12:15 to 13:45 at the Yonex Badminton Hall Hardbrücke. The number of players on the waitlist one week in advance determines the number of courts booked. If you are on the waitlist but can no longer attend, please remove yourself as early as possible. Open to players of all skill levels. This session is for doubles with a relaxed and social focus. Ideal for casual play, improvement and meeting new players. Payment can be made via TWINT after the session.

Be open for change and come into your full potential! Get unstuck with Kundalini Yoga, Pranayam and Meditation and learn the tools to explore your inner riches. Let go of mental trash, find courage and lightness, and bring a sparkling joyfulness into your everyday-life as you gradually connect with your innermost sensitive being. You will leave this class energetically re-charged, with a calm mind, your spirits lifted and a soothed heart. Looking forward to see you! Sat Nam and blessings of grace, Nava No previous knowledge required. This class is for anyone interested in kundalini yoga and meditation, newcomers and seasoned practitioners alike. Regular class: 35.- / 10-class multiple: 320.- (valid 4 months) Students / Unemployed / Kulturlegi: 25.- / 10-class multiple: 225.- (valid 4 months) Visit also: www.yoga2be.ch // Meetup: Yoga2Be - Movement, Energy, Nutrition for Body & Mind http://meetu.ps/c/3DljJ/8Hl5s/a

Welcome to the Competitive Play Session. This session takes place every Saturday from 10:45 to 12:15 at the Yonex Badminton Hall Hardbrücke. The number of players on the waitlist one week in advance determines the number of courts booked. If you are on the waitlist but can no longer attend, please remove yourself as early as possible. Players are accepted into the session based on skill suitability. This session is for experienced players looking for quality games. Play is focused on doubles with a competitive mindset and consistent rallies. You should be comfortable smashing, return smashes and keeping up a moderate tempo throughout the session. New players and those who are new to badminton are welcome to join the PM Session (Open Level Play). Payment can be made via TWINT after the session.

Web Zurich presents inspiring talks all about the web. Join us for the Mai 2026 meetup! We will have three talks as well as chit-chat and drinks. Whatapp: [https://chat.whatsapp.com/FxOfVTK9nf431xHtVl3eGK](https://chat.whatsapp.com/FxOfVTK9nf431xHtVl3eGK) Website: [https://webzurich.ch](https://webzurich.ch) 18:30 \~ 19:00 Arrival time with drinks, chat 19:00 \~ 19:10 Welcome and introduction 19:10 \~ 19:30 *Alex Suzuki* **Monetizing JavaScript: Building Profitable Products as a Solo Developer** Lessons learned from building and launching a commercial JavaScript library as a solo developer. 19:30 \~ 19:50 *Hugo Sousa* **Ten times tea** I'm building a programming language. When I got to the frontend, I ran into a problem: React's mental model is elegant, but the mental model is at odds with the code. Hooks, effects, and render passes create a runtime that bears little resemblance to the code we write. The Elm programming language works differently and its architecture (TEA = The Elm Architecture) has been adopted by other tools over the years. So I copied it as well. My language embeds TEA at the language level, not as a library. This unlocks time-travel debugging, reproducible application state and serializable bug reports that include the entire program state. This talk covers the quick introduction of my language, TEA, why TEA is the right fit and what becomes possible when the architecture is baked into the language itself. 19:50 \~ 20:10 *Marco Gähler* **Software testing** Many old software projects don't have any tests - if the code works, why should you bother with tests? Well, you really should bother, because code changes all the time. During development, you keep adding new features which at times requires large scale modifications of the code that will inevitably alter existing functionality. And in existing projects, one still has to make updates once in a while, for example for security patches. These things will always break existing functionality and tests are the only remedy against this issue. In this talk, we will look at the basic idea of tests, how to implement them, what issues to look out for and how you can test pretty much any piece of code if your code base is well structured. 20:10 onward More drinks & chat We look forward to see you there! Location https://zurich.impacthub.ch/space/bogen_d/ Viaduktstrasse 93, 8005 Zürich, Switzerland Visit our website https://webzurich.ch/ for more information about the Web Zurich community. This event is supported by Impact Hub Zürich, The global community of entrepreneurial people prototyping the future of business. At Impact Hub, you can connect, collaborate, co-work and create great content in an inspiring environment.

Welcome to the Open Level Play Session. This session takes place every Saturday from 10:45 to 12:15 at the Yonex Badminton Hall Hardbrücke. The number of players on the waitlist one week in advance determines the number of courts booked. If you are on the waitlist but can no longer attend, please remove yourself as early as possible. Open to players of all skill levels. This session is for doubles with a relaxed and social focus. Ideal for casual play, improvement and meeting new players. Payment can be made via TWINT after the session.

We are currently playing in a regular group of 12 players at higher intermediate/advanced level. Your registrations here will first be on the waiting list and when confirmed, payment is to be made by twint to secure your spot for participation. There is a charge of Chf 22 per person. That is inclusive of feather shuttles. Place of event - Schumacher Sport Center, Am Stadtrand 46, Dübendorf. Court no. 10, 11 & 12

If your morning starts with a homemade coffee… why drink it from a mug you randomly bought? 😉☕️ Join our ceramic workshop and create the coffee mug you’ll actually be excited to wake up to. And if you’re feeling extra brunch-coded, make a matching plate for your croissant moment. 🥐✨ **📍 Location:** Schaffhauserstrasse 272, 8057 Zurich **🗓 Date & Time:** May 31st (Sunday), 10h-12h **⏱ Duration:** 2 hours **💰 Price:** 65 CHF per participant **What You’ll Learn:** * Step-by-step guidance to create your own mug * Decorating and painting your pieces with your own personal style * Beginner-friendly techniques — no experience needed!‍ **What’s Included:** * All clay, paint, and working tools provided * Kiln firing and glaze to make your piece food safe and ready to use **All levels welcome** — from complete beginners to clay pros. Looking for what to do in Zurich on Sunday? Join us! ✨ Your future morning self will thank you! 📧 Email us at [ceramicsonwheels@gmail.com](mailto:ceramicsonwheels@gmail.com) if you have any questions!

**Latest Dojo Location!** **Knotty Pine Brewing** 1765 W 3rd Ave, Columbus, OH 43212 We're going to try a new dojo location for a few weeks and see how it works Dojos are informal Python group study sessions where everyone interested in Python gathers to learn about Python, help others with Python, or just hang out. Everyone is welcome from Python beginners to experts. Bringing a laptop is encouraged (we'll have extension cords and power strips). If there's something you want to learn leave a comment on this invite so we can plan ahead. We're looking for speakers for our Monthly Meetups! Fill out the form if you are interested in presenting to the Python Community. https://forms.gle/ehSfUAC2WgR34Crq9

WQC has weekly Thursday night social nights at the Westerville Java Central. Come and grab a coffee and connect with the community: low stakes, chill environment, and tasty drinks. No registration is required; come as you are.

Come out to Improving for our monthly iOS and Mac meetings. This Month's Presentation: Nothing yet. (You should volunteer). What is Cocoaheads (http://cocoaheads.org/)? CocoaHeads is a group devoted to discussion of Apple Computer's Cocoa Framework for programming on MacOS X and iOS (including the iPhone, iPad and Apple Watch). During monthly meetings, members present on their projects and offer tutorials on various programming topics. What is BuckeyeCocoa (http://buckeyecocoa.org/)? BuckeyeCocoa is a group of Objective-C/Swift developers/enthusiasts. We host monthly Cocoaheads and near-weekly NSCoder meetings in Columbus, Ohio. The meetings are free to attend. Presentations! Presenters welcome! We are always in need of people willing to present material. Any Swift and/or Objective-C related topic is welcome. Times can be 5 minutes (i.e. lightning talks) to a maximum of 2 hours. Interested? Contact info is on the BuckeyeCocoa website. To volunteer for a presentation contact us at @BuckeyeCocoa on Twitter. Follow us on Twitter! @BuckeyeCocoa (https://twitter.com/#!/Buckeyecocoa/) For more information: http://buckeyecocoa.org/

**Important time note:** Please plan on arriving between 5:30 and 6:00 as the elevators lock after 6 and you'll need to message us and we'll need to come get you. The building address is 4450 Bridge Park The entrance is 6620 Mooney St, Suite 400 You will need to scan your ID at the door to get a visitor badge. **Abstract** Like it or not, AI agents are now capable of turning a quickly written paragraph of requirements into a pull request that is ready to be integrated into real-world production applications and it's now our responsibility to make sure AI doesn't go rogue and take down prod - or corrupt our data by misunderstanding the requirements or our existing schemas. In this session we'll explore strategies to protect our codebases through unit and integration testing, documentation, and code review along with additional ways of providing context and guard rails to our AI agents as they carry out the work we've assigned them to do. By the time we're done, you'll have a firm grasp of the problem and understand some helpful options for protecting your codebase from vibe coding mishaps getting YOLOed into prod. **YouTube Link** https://youtube.com/live/BltmWMH1zG0?feature=share

Model Context Protocol (MCP) is emerging as a standard way for AI models to securely interact with external tools and systems. This session provides a practical deep dive into MCP architecture, core concepts, and real-world integration patterns. We will explore how MCP enables structured tool calling, improves interoperability, and simplifies AI integration in existing applications. The talk will include examples of connecting AI models with APIs, databases, and enterprise systems, with a focus on how developers can adopt MCP in Java-based environments. **Note**: This is a hybrid in-person/online event. Food and social for those in the OCI training room starts at 6:00pm. Presentation starts at 6:30pm for those online and in the training room.

**✅ Bachata Mondays with Todd Smith!** **👉 Beginner Bachata Class** **$15 In Advance / $20 At the Door** 7:00 pm – 7:15 pm … Registration 7:15 pm – 8:15 pm … Beginner Class **👉 Intermediate Bachata Class** **= $15 In Advance / $20 At the Door** 8:15 pm – 8:30 pm Registration 8:30 pm – 9:30 pm Intermediate Class **👉 If You Take Both Bachata Classes** **= $25 In Advance / $35 At the Door** **👉 Buy Advance Tickets Now at:** https://columbussalsadancing.com/bachata-mondays-dance-class-tickets/